** Thoracic aorta — the half of the descending aorta above the diaphragm

** Abdominal aorta — the half of the descending aorta below the diaphragm

** Branches of the aorta, such as the carotid artery, the subclavian artery, the celiac trunk, the mesenteric arteries, the renal artery and the iliac artery.